Liquid purification or separation – With repair or assembling means
Patent
1993-12-30
1995-11-21
Dawson, Robert A.
Liquid purification or separation
With repair or assembling means
210484, 210489, 2104935, 2104941, 210496, 2104972, 55500, 55521, 55527, 55DIG5, B01D 2706
Patent
active
054683823
ABSTRACT:
A porous filter medium is formed by a pleated cylinder of a depth filter medium. An absolute rated inner filtration layer is arranged between upstream and downstream drainage layers. The depth filter medium is formed from a continuous sleeve. Additionally or alternatively at least the downstream drainage layer may be formed integrally with at least a part of an inner filtration layer. The material of the medium may be a fibrous mass of non-woven synthetic polymeric micro-fibres which are free of fibre-to-fibre bonding and are secured to each other by mechanical entanglement or intertwining, with the diameter of the fibrous structure varying across the medium.
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Buttery Roger A.
Cook Nigel J. D.
Grimes Michael
Gutman Richard G.
Weight Kenneth R.
Dawson Robert A.
Pall Corporation
Walker W. L.
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